Music-leaf turner.



No. 686,084. I Patented Nov.-5, 19m.

n. r. KIEFF & J. E. TRAHAN.

MUSIC LEAF TURNER.

(Application filed Dec. 8, 1900.)

2 Shuts-Sheet 2,

I (,No Nodal.)

, V. V r I I-M'I'IIIIIIIIWIIIIIIII- NVENTOR$ THE NoRRvs PETERS ca, womuma, WASHINGTON, u. c.

U ITED STATES PATENT OFFICE.

DANIEL F. KIEFF AND JOSEPH E. TRAHAN, OF \VATERTOWN, NElV YORK.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent N 0. 686,084, dated November 5, 1901. Application filed December 8, 1900. Serial No. 38,478. (No model.)

To aZZ whom it may concern.- Mounted in the ears C of the plate is it Be it known that we, DANIEL F. KIEFF and pin C to which is secured a toothed segment JOSEPH E. TRAHAN, citizens of the United E, having teeth e thereon, and an integral 55 States, residing at VVatertown, in the county arm E, carrying at its outer free end a clamp 5 of Jefferson and State of New York, have in- F. Said toothed segment is adapted to turn vented certain newand useful Improvements in an elongated slot in the plate 0, and the in Music-Leaf Turners; and we do declare teeth of said segment are normally in mesh the following to be a full, clear, and exact dewith the teeth of the rack-bar G, which is 60 scription of the invention, such as willenable mounted to reciprocate in apertures in the others skilled in the art to which it appertaius angled ends of the plate H, forming the inner to make and use the same, reference being portion of the wheel-supporting frame, which had to the accompanying drawings, and tothe is shown in Figs. 2 and This plate is seletters of reference marked thereon, which cured to the rear'face of the plate 0' by means 65 form a part of this specification. of bolts H. (Shown in Figs. 1, 2, and 3.)

This invention relates to new and useful Secured at right angles and projecting beimprovementsiu music-leaf turners, in which neath said rackbar is aloop L, and mounted a spring-actuated reciprocating rack-bar is on a shaft M, which is journaledin the plates employed to throw a leaf-turniug rod. M and M is a double cam N, terminating 7o Theinvention willbehereinafterdescrihed in right-angled shoulders N at points diain detail and then specifically defined in the metrically opposite each other, and adjacent appended claims, and is clearly illustrated in to one of said shoulders is a pin a, carried by the accompanying drawings, which, with the the cam, and said pin is adapted to work lonletters of reference marked thereon, form gitudinally in the loop carried by the rack- 75 part of this application, and in which d rawbar, and as the shaft carrying said cam makes ings similar letters of reference indicate like a complete revolution the rack-bar is caused partsthroughoutthe several views,in which to be thrown to its outer limit in opposite di- Figurel is a perspective view of our imrect-ions, thus causing the arm which is proved music-leaf turner. Fig. 2 is a rear clamped to the music-leaf to swing from one 80 view of the board on which the music is held, end of the board to the other, thus presentshowing the leafactuating mechanism seingat each revolution of the cam the opposite cured thereto. Fig. 3 is a horizontal-section faces of the leaf of music. Mounted in aperon line 8 3 of Fig. 2. Fig. 4 is adetail in pertures M in said plates M and M is a shaft spective showing the inner portion of the O, carryingacoiled spring, one end of which 85 frame which supports a double cam-wheel, is fastened to said shaft and the other end to also showing the means for holding said cama stationary part of the frame, and O is a wheel from rotation. Fig. 5 is a detail view gear-wheel, which is mounted to rotate with of the lever or the key which releases the said shaft 0. A suitable ratchet-wheel O is catch from the cam and allows the raclnbar also carried on said shaft and rotates therego to move longitudinally. with and is engaged by a spring-actuated Reference now being had to the details of dog 0 while a suitable winding-key O is the drawings by letter, Adesiguates the rack provided for winding up the spring. The on which the music is held by means of acenteeth of said gear-wheel O are adapted to tral rod B, which has its lower end seated in mesh with the teeth of a gear-wheel P, which 5 the flanged or projecting portion A at the is mounted on a shaft P in said frame and bottom of the board and its upper end havin turn meshes with the teeth of a pinioning a lug B, which is adapted to be inserted wheel Q, which is mounted on and rotates into an aperture C in the plate 0, which is with the shaft M, which carries said double secured to the face of the music-holding cam. Bythis mechanism it will he observed 100 board. Said rod is adapted to hold the muthat as the spring is wound up motion is imsic at its longitudinal center to the board, parted from the shaft carrying said spring while short pins D are provided, which hold to the double cam, causing the latter to rothe outer covers or leaves of music open. fate, and through its connections with the said board.

rack-bar will cause the latter to reciprocate. In order to allow said double cam to make a one-half revolution for the purpose of turning aleaf in one direction, we provide a springactuated catch R, which has an angled end disposed in the path of said shoulders of the cam and is adapted to engage the same. Said arm is mounted upon one of the pins R, which pass through the lower portion of the plates M and Miand a spring S,having one end secured to a pin S, has its free end bent to form a hook and caught over an arm T, which is secured at its inner end to the pin on which said angled arm engaging the cam is mounted. By means of the hook in said spring-arm engaging over the arm T it will be observed that the free angled end of the arm adjacent to the cam will be held against the circumference of said double cam and will catch against each shoulder as the cam rotates unless said arm is raised out of the path of said shoulders. The lower end of the arm T is bent to form an eye and is engaged by the upper angled end of the rod J, which is journaled in apertures in the brackets J on the rear face of The lower end of said rod is bent at right angles to its upper angled end and in an opposite direction from the angle at its upper end, and mounted in the flanged portion of the board, at the bottom thereof, is a doubleangled operating member I, having a key I at its lower end. 'The upper angled end of this member is held against the lower end of the rod .Land said member under the influence of the spring bearing against the arm T is caused to be normally held at its farthest outward throw, and when a slight pressure is applied to said key the upper angled end of said member will force the lower angled end of the rod J toward the rear face of the board and the upper angled end of the rod J will swing laterally, carrying with it the lowerend of the arm T, which will cause the free angled end of the cam-engaging arm to be raised out of the path of the shoulders of said cam, allowing the cam to rotate. If pressure is relieved from the key after being once depressed, the angled arm will allow said cam to make a onehalf revolution, which will turn the leaf of music. When it is desired to return the lever to its original position, a second application of pressure to the key will cause the lever-carrying arm to swing in the opposite direction.

While in the drawings we have shown but a single lever-engaging arm, it is our purpose to have, if desired, a plurality of arms, which may be similarly constructed when it is desired to turn several pages of music. It is thought, however, that one arm will sufficiently illustrate the principle of our invention. Hence butoneis shown in the drawings.

Having thus described our invention, what we claim to be new,and desire to secure by Letters Patent, is

1. In a music leaf turner, the board, a toothed segment journaled on the board, bracket, a reciprocating rack mounted in said bracket, and having a slotted member, a double cam-wheel, the shaft on which the same is mounted, the pin carried by the cam to engage said slotted member, a spring-actuated shaft, geared connections between the same and the cam-shaft, a pin journaled in the frame carrying the spring-actuated shaft, an arm carried by said pin and having its angled end held adjacent to shoulders on said cam, a second pin mounted in said frame, and havinga spring-arm secured thereto, the end of said arm being hooked, an arm secured to the pin carrying the angled arm, and adapted to be engaged by said spring-arm, and means for raising said angled arm out of the path of shoulders on the cam, as shown and described.

2. In combination with the rack-bar, the segment withintegralarm,the double cam and spring-actuated mechanism for rotating said cam, the frame and pin journaled therein, an arm carried by said pin, one of said arms being angled, and disposed in the path of shoulders on said cam, the second arm being springactuated, and having an eye at its end, a rod journaled in suitable hearings on said board, and having its upper angled end engaging said eye, and a tilting angled member mounted in the flange at the lower end of said board, and having a key at its lower end, its upper end being bent, and adapted to engage the lower angled end of said rod, whereby as said key is depressed, the angled arm, which is normally held in contact with said cam, is raised out of the path of the shoulders thereon, as shown and described.

In testimony whereof we aflix our signatures in presence of two witnesses.

DANIEL F. KIEFF. JOSEPH E. TRAIIAN. Witnesses:

DAVID D. KIEFF, PETER OULLEN. 

